<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>跳跃的课工场</title>
    <style type="text/css">
        *{
            margin:0;
            padding:0;
        }

        .container{
            width:600px;
            height:600px;
            border:1px gray solid;
            margin:50px auto;
            transform-style: preserve-3d;
            perspective: 1200px;
        }
        .ke{
            width:300px;
            height:437px;
            display:block;
            margin:50px auto;
            background: url(img/ke.jpg) 0px 0px / 300px 437px no-repeat;
            box-shadow:-7px 10px 10px #333;
            transform: rotateX(60deg) rotateY(3deg) rotateZ(-25deg);
            transition: all 1s ease-out;
        }
        .ke:hover{
            transform: rotate3D(0,0,0,0deg);
            box-shadow:-100px 100px 10px #fff;
        }
    </style>
</head>
<body>
    <div class="container"><a class="ke" href=""></a></div>
</body>
</html>